Alert archive / Maryland / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 222, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2026, 10:40 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 36 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 21, 2026, 10:40 PM EDT (02:40 UTC)
- Expired
- Jul 21, 2026, 11:16 PM EDT
- In force
- 36 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 63 km from the middle of the area, began a volume at 02:39 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 21, 10:45 PM EDT | TSTM WND DMG | Bozman, MD | Trees down on MD-579 eastbound at Pine Point Road. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 5 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 21, 2:46 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
The nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 2.7 hours before the alert went out and 338 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2535 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 789 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 155 m²/s²
- 0-3 km storm-relative helicity
- 246 m²/s²
- Significant tornado parameter
- 3.1
- Supercell composite
- 17.2
The text
As transmitted.
219
WUUS51 KPHI 220240
SVRPHI
MDC011-041-220330-
/O.NEW.KPHI.SV.W.0222.260722T0240Z-260722T0330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1040 PM EDT Tue Jul 21 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southern Talbot County in eastern Maryland...
Southern Caroline County in eastern Maryland...
* Until 1130 PM EDT.
* At 1040 PM EDT, a severe thunderstorm was located near Breezy
Point, moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Easton, Federalsburg, Trappe, St. Michaels, Preston, Oxford,
Tanyard, Harmony, Smithville, Agner, Choptank, Hambleton, and
Windyhill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3879 7632 3880 7572 3865 7571 3871 7584
3870 7590 3857 7604 3863 7608 3864 7615
3871 7622 3870 7623 3876 7622 3876 7625
3871 7628 3872 7630 3878 7629 3876 7632
3868 7633 3868 7634
TIME...MOT...LOC 0240Z 268DEG 45KT 3861 7642
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich2 follow-up statements
413
WWUS51 KPHI 220259
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1059 PM EDT Tue Jul 21 2026
MDC011-041-220330-
/O.CON.KPHI.SV.W.0222.000000T0000Z-260722T0330Z/
Talbot MD-Caroline MD-
1059 PM EDT Tue Jul 21 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR SOUTHEASTERN TALBOT AND SOUTHEASTERN CAROLINE COUNTIES...
At 1059 PM EDT, a severe thunderstorm was located near University Of
Maryland Center For Environmental Studies, or near Cambridge, moving
east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Federalsburg, Trappe, Choptank, and Windyhill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3863 7608 3864 7615 3867 7617 3871 7571
3865 7572 3869 7577 3868 7578 3870 7581
3868 7593 3866 7596 3865 7596 3857 7604
TIME...MOT...LOC 0259Z 267DEG 44KT 3857 7618
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich841
WWUS51 KPHI 220316
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1116 PM EDT Tue Jul 21 2026
MDC011-041-220326-
/O.CAN.KPHI.SV.W.0222.000000T0000Z-260722T0330Z/
Talbot MD-Caroline MD-
1116 PM EDT Tue Jul 21 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TALBOT AND
SOUTHEASTERN CAROLINE COUNTIES IS CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until midnight EDT for
southern Delaware...and eastern Maryland.
LAT...LON 3863 7608 3864 7615 3867 7617 3871 7571
3865 7572 3869 7577 3868 7578 3870 7581
3868 7593 3866 7596 3865 7596 3857 7604
TIME...MOT...LOC 0314Z 268DEG 45KT 3858 7590
$$
HoeflichWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 10:06 PM EDT, 34 minutes earlier. Its key messages:
- 1) The threat for severe weather and flash flooding has largely ended for tonight, however some additional severe storms and flash flooding will be possible Wednesday. Wednesday's severe weather and flooding threat is not expected to be as widespread though as it will be confined mainly to areas south and east of the urban corridor.
Area forecast discussion, Jul 21, 10:06 PM EDT, 34 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
1006 PM EDT Tue Jul 21 2026
.WHAT HAS CHANGED...
The Severe Thunderstorm Watch was allowed to expire at 10 PM and
we've also cancelled the Flood Watch.
&&
.KEY MESSAGES...
1) The threat for severe weather and flash flooding has largely
ended for tonight, however some additional severe storms and flash
flooding will be possible Wednesday. Wednesday's severe weather and
flooding threat is not expected to be as widespread though as it
will be confined mainly to areas south and east of the urban
corridor.
&&
.DISCUSSION...
KEY MESSAGE 1...The threat for severe weather and flash flooding has largely
ended for tonight, however some additional severe storms and flash
flooding will be possible Wednesday. Wednesday's severe weather and
flooding threat is not expected to be as widespread though as it
will be confined mainly to areas south and east of the urban
corridor.
As of 10 PM, the Severe Thunderstorm Watch has been allowed to
expire and we've also cancelled the Flood Watch. That said, the area
still remains in the warm sector ahead of an approaching cold front
and though the instability has significantly decreased, there
is still some remaining. For this reason, still expecting some
showers and a few storms to continue into the overnight as the
cold front approaches from the north and west and weak impulses
aloft move through the upper level flow. Locally heavy downpours
will be possible but any flooding should be largely of the
nuisance variety.
On Wednesday, the cold front will sag farther south and east and
depending on how quickly this clears our area there will be some
showers and thunderstorms, especially as additional shortwaves move
through the flow within the upper-level trough overhead. This looks
to be more concentrated across southern New Jersey to Delmarva but
could extend into the I-95 corridor for a time. There is some severe
weather risk mainly south/east of the I-95 corridor with locally
damaging wind gusts the main threat. The greater instability and
shear looks to reside across Delmarva on southward, where a little
higher severe thunderstorm risk is indicated. Some locally excessive
rainfall is possible with some local flash flood risk, however this
looks to be less compared to today given the shift farther south and
more into the coastal plain. Once the front moves away by later
Wednesday, it turns drier for Thursday/Friday and right into the
weekend.
&&
.AVIATION /02Z WEDNESDAY THROUGH SUNDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Tonight...Still some showers and thunderstorms around this
evening mainly from around Philly southward. In any of these
showers conditions may still drop to MVFR or even IFR...best
chances for this at MIV and ACY. Otherwise, widespread showers
diminish by the overnight period with MVFR cigs likely affecting
most sites by around the 04-07z time frame. Winds generally
southwest 10 to 15 knots but locally strong and variable winds
possible in any storms.
Wednesday...Once morning clouds clear by around 14Z, should
have prevailing VFR conditions. However, temporary MVFR or even
IFR conditions will be possible with showers and storms. The
highest risk of showers and storms is at KACY, but it is
possible the storms will be south of all TAF sites. Southwest
winds around 10 KT with some gusts of 15-20 knots possible.
Moderate confidence.
Outlook...
Thursday through Saturday...VFR.
&&
.MARINE...
Small Craft Advisory conditions for all coastal waters through
Wednesday evening. SCA conditions do subside though overnight
on Delaware Bay. Gusty thunderstorms probable into tonight.
Outlook...
Wednesday...Small Craft Advisory remains in effect for the ocean
zones.
Thursday through Saturday...The conditions are anticipated to be
below Small Craft Advisory criteria.
Rip Currents...
For Wednesday, winds turn more southwesterly but still 10-20
mph. However, breaking wave heights are expected to increase,
with breaking waves in the surf zone as high as 5 feet possible.
Still a 7 second period though which will mitigate the rip
current threat some. However, will continue with a MODERATE risk
for the development of dangerous rip currents at all beaches.
For Thursday, winds come around to the northeast and will generally
be 15 to 20 mph. Breaking waves are expected to be around 2-4 feet
with a 7 second period. With the onshore component of the wind and
multiple swell groups expected, expecting a MODERATE risk for the
development of dangerous rip currents at all beaches.
For specific beach forecasts, visit weather.gov/beach/phi
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Small Craft Advisory until 6 AM EDT Wednesday for ANZ430-431.
Small Craft Advisory until 2 AM EDT Thursday for ANZ450>455.
&&
DISCUSSION...Fitzsimmons/Gorse/MJL
AVIATION...Fitzsimmons/Gorse/Johnson
MARINE...Gorse/Hoeflich/MJLHazardous weather outlook, Jul 21, 4:29 AM EDT, 18 hours 11 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 429 AM EDT Tue Jul 21 2026 MDZ012-015-019-020-220900- Kent MD-Queen Annes-Talbot-Caroline- 429 AM EDT Tue Jul 21 2026 This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...Today and tonight. Severe thunderstorms with damaging winds and hail are possible this afternoon and evening. Localized flash flooding is possible this afternoon and tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Some severe thunderstorms with damaging winds are possible Wednesday. Localized flash flooding is possible on Wednesday. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
In the hours before
Local storm report, Jul 21, 7:23 PM EDT, 3 hours 17 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
723 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0719 PM Tstm Wnd Gst 1 ESE Barnegat Light 39.75N 74.10W
07/21/2026 M42 MPH ANZ451 NJ Mesonet
Barnegat Inlet Light.
&&
HoeflichLocal storm report, Jul 21, 8:07 PM EDT, 2 hours 33 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
807 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0719 PM Marine Tstm Wind 1 ESE Barnegat Light 39.75N 74.10W
07/21/2026 M42 MPH ANZ451 NJ Mesonet
Barnegat Inlet Light.
&&
HoeflichLocal storm report, Jul 21, 8:28 PM EDT, 2 hours 12 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
828 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0355 PM Tstm Wnd Dmg 2 W Blakeslee 41.09N 75.64W
07/21/2026 Carbon PA 911 Call Center
Tree down on wires in Lake Harmony. Time
estimated from radar.
&&
ZCLocal storm report, Jul 21, 8:31 PM EDT, 2 hours 9 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
831 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0419 PM Tstm Wnd Dmg Price Twp 41.15N 75.22W
07/21/2026 Monroe PA 911 Call Center
Trees down on wires. Time estimated from
radar.
&&
ZCLocal storm report, Jul 21, 9:10 PM EDT, 1 hour 30 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
910 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0452 PM Tstm Wnd Dmg Montgomery Twp 40.46N 74.66W
07/21/2026 Somerset NJ 911 Call Center
Trees and wires down. Time given in report.
&&
ZCLocal storm report, Jul 21, 9:28 PM EDT, 1 hour 12 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
928 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0709 PM Tstm Wnd Dmg Stafford Twp 39.70N 74.28W
07/21/2026 Ocean NJ 911 Call Center
Tree down in Stafford Twp. Time estimated
from radar.
&&
ZCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 10:42 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2026Every severe thunderstorm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.